Sling swivel



FIG. 1 is a perspective view of the sling swivel according to my noveldesign;

FIG. 2 is a top plan view thereof, the bottom plan view being a mirrorimage thereof;

FIG. 3 is a left side elevational view thereof; and,

FIG. 4 is a right side elevational view thereof.

The ornamental design for a sling swivel, as shown and described.